1-r^2=0

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Solution for 1-r^2=0 equation: 


Simplifying
1 + -1r2 = 0

Solving
1 + -1r2 = 0

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-1' to each side of the equation.
1 + -1 + -1r2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -1r2 = 0 + -1
-1r2 = 0 + -1

Combine like terms: 0 + -1 = -1
-1r2 = -1

Divide each side by '-1'.
r2 = 1

Simplifying
r2 = 1

Take the square root of each side:
r = {-1, 1}

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